private async void BtnSearch_Clicked(object sender, EventArgs e)
{
// if flickrTask already running, prompt user
if (flickrTask?.Status != TaskStatus.RanToCompletion)
{
flickrClient.CancelPendingRequests();
}
// Flickr's web service URL for searches
var flickrURL = "https://api.flickr.com/services/rest/?method=" +
$"flickr.photos.search&api_key={KEY}&" +
$"tags={txtSearch.Text.Replace(" ", ",")}" +
"&tag_mode=all&per_page=500&privacy_filter=1";
ListView.ItemsSource = null;
flickrPhotos = new List <FlickrResult>()
{
};
masterNavigationItems = new List <MasterNavigationItem>()
{
};
flickrTask = flickrClient.GetStringAsync(flickrURL);
XDocument flickrXML = XDocument.Parse(await flickrTask);
flickrPhotos =
(from photo in flickrXML.Descendants("photo")
let id = photo.Attribute("id").Value
let title = photo.Attribute("title").Value
let secret = photo.Attribute("secret").Value
let server = photo.Attribute("server").Value
let farm = photo.Attribute("farm").Value
select new FlickrResult
{
Title = title,
URL = $"https://farm{farm}.staticflickr.com/" +
$"{server}/{id}_{secret}.jpg"
}).ToList();
if (flickrPhotos.Any())
{
await Task.Factory.StartNew(() => {
ParallelLoopResult loopResult = Parallel.ForEach <FlickrResult>(flickrPhotos, photo =>
{
MasterNavigationItem item = new MasterNavigationItem();
item.Icon = photo.URL;
item.Title = photo.Title;
masterNavigationItems.Add(item);
});
});
ListView.ItemsSource = masterNavigationItems;
}
else // no matches were found
{
//imagesListBox.Items.Add("No matches");
}
}
public DetailPageView(MasterNavigationItem item)
{
InitializeComponent();
lblImageName.Text = item.Title;
imgDetail.Source = item.Icon;
}
private async void BtnSearch_Clicked(object sender, EventArgs e)
{
if (txtSearch.Text != " ")
{
try
{
// if flickrTask already running, prompt user
if (flickrTask?.Status != TaskStatus.RanToCompletion)
{
bool answer = await DisplayAlert("Alert", "Cancel the current Flickr search?", "No", "Yes");
if (answer)
{
return;
}
else
{
flickrClient.CancelPendingRequests(); // cancel search
}
}
// Flickr's web service URL for searches
var flickrURL = "https://api.flickr.com/services/rest/?method=" +
$"flickr.photos.search&api_key={KEY}&" +
$"tags={txtSearch.Text.Replace(" ", ",")}" +
"&tag_mode=all&per_page=500&privacy_filter=1";
ListView.ItemsSource = null;
flickrPhotos = new List <FlickrResult>()
{
};
masterNavigationItems = new List <MasterNavigationItem>()
{
};
flickrTask = flickrClient.GetStringAsync(flickrURL);
XDocument flickrXML = XDocument.Parse(await flickrTask);
flickrPhotos =
(from photo in flickrXML.Descendants("photo")
let id = photo.Attribute("id").Value
let title = photo.Attribute("title").Value
let secret = photo.Attribute("secret").Value
let server = photo.Attribute("server").Value
let farm = photo.Attribute("farm").Value
select new FlickrResult
{
Title = title,
URL = $"https://farm{farm}.staticflickr.com/" +
$"{server}/{id}_{secret}.jpg"
}).ToList();
if (flickrPhotos.Any())
{
await Task.Factory.StartNew(() =>
{
ParallelLoopResult loopResult = Parallel.ForEach <FlickrResult>(flickrPhotos, photo =>
{
MasterNavigationItem item = new MasterNavigationItem
{
Icon = photo.URL,
Title = photo.Title,
Target = typeof(DetailPageView)
};
masterNavigationItems.Add(item);
});
});
ListView.ItemsSource = masterNavigationItems;
}
else
{
await DisplayAlert("Alert", "No matches", "OK");
}
}
catch (Exception ex)
{
await DisplayAlert("Exception!", ex.Message, "OK");
}
}
}
